Electroconductive powder and method for production thereof
US7407606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2004 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Sep 19, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing a titanium dioxide powder having a well electroconductive layer containing substantially no antimony, which comprises providing a titanium dioxide powder containing specific amounts or less of alkali metals, such as sodium and potassium, alkaline earth metals, such as magnesium and calcium, and metals having a valence of four or less, such as aluminum, zinc and iron, preparing an aqueous suspension of the titanium dioxide powder, adding an acidic aqueous solution containing a tin compound and a phosphorus compound and an alkaline solution to the above aqueous suspension so that the aqueous suspension has a pH in the range of 2 to 6 or 8 to 12, and firing the resulting product at a temperature of 600 to 925° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.